newprojectcreationwizardpagej.java

一个java写的business process management系统

/*
 * Copyright (c) 2003, Alexander Greif
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Flow4J-Eclipse project nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package net.orthanc.flow4j.designer.ui.wizards;

import java.lang.reflect.InvocationTargetException;

import net.orthanc.flow4j.designer.core.Flow4JPlugin;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.ui.wizards.JavaCapabilityConfigurationPage;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.ui.dialogs.WizardNewProjectCreationPage;

/**
 * Class NewProjectCreationWizardPageJ TODO
 * @author agreif
 * 
 */
public class NewProjectCreationWizardPageJ
	extends JavaCapabilityConfigurationPage {

		private WizardNewProjectCreationPage fMainPage;

		private IPath fCurrProjectLocation;
		protected IProject fCurrProject;
	
		protected boolean fCanRemoveContent;

		/**
		 * Constructor for NewProjectCreationWizardPage.
		 */
		public NewProjectCreationWizardPageJ(WizardNewProjectCreationPage mainPage) {
			super();
			fMainPage= mainPage;
			fCurrProjectLocation= null;
			fCurrProject= null;
			fCanRemoveContent= false;
		}
	
		/* (non-Javadoc)
		 * @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean)
		 */
		public void setVisible(boolean visible) {
			if (visible) {
				changeToNewProject();
			} else {
				removeProject();
			}
			super.setVisible(visible);
		}
	
		/**
		 * TODO
		 * 
		 */
		private void changeToNewProject() {
			IProject newProjectHandle= fMainPage.getProjectHandle();
			IPath newProjectLocation= fMainPage.getLocationPath();
		
			if (fMainPage.useDefaults()) {
				fCanRemoveContent= !newProjectLocation.append(fMainPage.getProjectName()).toFile().exists();
			} else {
				fCanRemoveContent= !newProjectLocation.toFile().exists();
			}
				
			final boolean initialize= !(newProjectHandle.equals(fCurrProject) && newProjectLocation.equals(fCurrProjectLocation));
		
			IRunnableWithProgress op= new IRunnableWithProgress() {
				public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
					try {
						updateProject(initialize, monitor);
					} catch (CoreException e) {
						throw new InvocationTargetException(e);
					} 
				}
			};
	
			try {
				getContainer().run(false, true, op);
			} catch (InvocationTargetException e) {
				Flow4JPlugin.message("An error occurred while creating project. Check log for details.");
				Flow4JPlugin.log(e);
			} catch  (InterruptedException e) {
				// cancel pressed
			}
		}
	
		/**
		 * TODO
		 * @param initialize
		 * @param monitor
		 * @throws CoreException
		 * @throws InterruptedException
		 */
		protected void updateProject(boolean initialize, IProgressMonitor monitor) throws CoreException, InterruptedException {
			fCurrProject= fMainPage.getProjectHandle();
			fCurrProjectLocation= fMainPage.getLocationPath();
			boolean noProgressMonitor= !initialize && fCanRemoveContent;
		
			if (monitor == null || noProgressMonitor ) {
				monitor= new NullProgressMonitor();
			}
			try {
				monitor.beginTask("Creating project and examining existing resources...", 2);				 //$NON-NLS-1$
			
				createProject(fCurrProject, fCurrProjectLocation, new SubProgressMonitor(monitor, 1));
				if (initialize) {
					IClasspathEntry[] entries= null;
					IPath outputLocation= null;
					init(JavaCore.create(fCurrProject), outputLocation, entries, false);
				}
				monitor.worked(1);
			} finally {
				monitor.done();
			}
		}
	
		/**
		 * Called from the wizard on finish.
		 */
		public void performFinish(IProgressMonitor monitor) throws CoreException, InterruptedException {
			try {
				if (fCurrProject == null) {
					updateProject(true, new SubProgressMonitor(monitor, 1));
				}
				configureJavaProject(new SubProgressMonitor(monitor, 2));
			} finally {
				fCurrProject= null;
			}
		}



		/**
		 * TODO
		 * 
		 */
		private void removeProject() {
			if (fCurrProject == null || !fCurrProject.exists()) {
				return;
			}
		
			IRunnableWithProgress op= new IRunnableWithProgress() {
				public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
					boolean noProgressMonitor= Platform.getLocation().equals(fCurrProjectLocation);
					if (monitor == null || noProgressMonitor) {
						monitor= new NullProgressMonitor();
					}
					monitor.beginTask("Removing project...", 3);				 //$NON-NLS-1$

					try {
						fCurrProject.delete(fCanRemoveContent, false, monitor);
					} catch (CoreException e) {
						throw new InvocationTargetException(e);
					} finally {
						monitor.done();
						fCurrProject= null;
						fCanRemoveContent= false;
					}
				}
			};
	
			try {
				getContainer().run(false, true, op);
			} catch (InvocationTargetException e) {
				Flow4JPlugin.message("An error occurred while removing a temporary project");	//$NON-NLS-1$
				Flow4JPlugin.log(e);
			} catch  (InterruptedException e) {
				// cancel pressed
			}
		}		
			
		/**
		 * Called from the wizard on cancel.
		 */
		public void performCancel() {
			removeProject();
		}
}